SN220M016ST Equivalent & Substitute Parts Reference

Part Overview

The SN220M016ST is a 22 µF, 16 V aluminum electrolytic capacitor in radial, can package manufactured by Cornell Dubilier Electronics (CDE). This component is classified as obsolete, making identification of functionally equivalent alternatives necessary for ongoing design support and procurement continuity. The part operates across a temperature range of -40°C to 85°C with a rated lifetime of 1000 hours at 85°C, serving general-purpose applications requiring stable capacitance and low equivalent series resistance.

Substiute Parts

SN220M016ST

Cornell Dubilier Electronics (CDE)In Stock: 1135SN220M016ST Datasheet

Current PartRFQ

ECE-A1VN220U

Panasonic Electronic ComponentsIn Stock: 10150ECE-A1VN220U Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the SN220M016ST is determined by the following critical parameters:

Mandatory Matching Criteria:

• Capacitance value: 22 µF (exact match required)
• Tolerance: ±20% (standard tolerance class)
• Polarization: Bi-Polar
• Mounting type: Through Hole
• Package type: Radial, Can
• Lead spacing: 0.098" (2.50 mm)
• Operating temperature range: -40°C to 85°C minimum

Allowable Substitution Parameters:

• Voltage rating: Equal to or greater than 16 V (higher voltage ratings provide backward compatibility)
• ESR: Lower or equal values acceptable (improved performance)
• Lifetime @ 85°C: Equal to or greater than 1000 hours (extended reliability acceptable)
• Ripple current: Equal to or greater than 69 mA @ 120 Hz (higher current handling acceptable)
• Physical dimensions: Minor variations within standard can tolerances acceptable

The ECE-A1VN220U meets all mandatory criteria and exceeds performance specifications in voltage rating, lifetime, and ripple current capacity, qualifying it as a direct substitute.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute: ECE-A1VN220U (Panasonic Electronic Components)

The ECE-A1VN220U is the qualified substitute for the obsolete SN220M016ST based on the following engineering criteria:

1. Functional Equivalence: Identical capacitance (22 µF) and tolerance (±20%) ensure direct functional replacement in circuit applications.

2. Voltage Rating Enhancement: The 35 V rating exceeds the original 16 V specification, providing improved safety margin and reliability in the application circuit without requiring design modification.

3. Extended Operational Life: The 2000-hour lifetime at 85°C doubles the original 1000-hour specification, extending component reliability and reducing field failure risk.

4. Improved Ripple Current Handling: The 80 mA @ 120 Hz rating exceeds the original 69 mA specification, supporting higher current stress conditions.

5. Compliance Certification: Both components maintain ROHS3 compliance, ensuring regulatory continuity and environmental standards adherence.

6. Physical Compatibility: Lead spacing (0.098" / 2.50 mm) is identical. Case diameter and height variations (0.248" / 6.30 mm and 0.441" / 11.20 mm respectively) remain within standard can package tolerances and do not require PCB redesign.

7. Active Product Status: The ECE-A1VN220U is an active product with established supply chain availability, eliminating obsolescence risk associated with the original component.

Frequently Asked Questions (FAQ)

Q: Can the ECE-A1VN220U be used as a direct replacement for the SN220M016ST without circuit modification?

A: Yes. The ECE-A1VN220U provides direct functional replacement. The higher voltage rating (35 V vs. 16 V) and extended lifetime (2000 Hrs vs. 1000 Hrs) represent performance enhancements that do not require circuit redesign. Lead spacing and mounting type are identical.

Q: What is the significance of the voltage rating difference (16 V vs. 35 V)?

A: The 35 V rating of the ECE-A1VN220U exceeds the circuit requirement of 16 V, providing a safety margin. In aluminum electrolytic capacitors, a higher voltage rating does not alter capacitance or tolerance characteristics. The substitute operates safely in circuits designed for 16 V operation.

Q: Are there physical dimension differences that affect PCB layout?

A: Minor differences exist: case diameter increases from 0.236" (6.00 mm) to 0.248" (6.30 mm), and height increases from 0.433" (11.00 mm) to 0.441" (11.20 mm). These variations fall within standard radial can package tolerances and do not require PCB redesign. Lead spacing remains identical at 0.098" (2.50 mm).

Q: What is the ESR specification for the ECE-A1VN220U?

A: The ESR value for the ECE-A1VN220U is not provided in the available technical data. The original SN220M016ST specifies 10.25 Ohm @ 120 Hz. For applications requiring specific ESR verification, contact the manufacturer directly.

Q: Does the ECE-A1VN220U support the same ripple current as the original part?

A: The ECE-A1VN220U exceeds the original ripple current specification. It supports 80 mA @ 120 Hz compared to the original 69 mA @ 120 Hz, plus an additional 136 mA @ 10 kHz high-frequency rating. This enhancement provides improved performance margin.

Q: Are both components RoHS compliant?

A: Yes. Both the SN220M016ST and ECE-A1VN220U are ROHS3 compliant, ensuring regulatory alignment and environmental standards adherence.

Q: What is the operational temperature range for the ECE-A1VN220U?

A: The ECE-A1VN220U operates across -40°C to 85°C, matching the original SN220M016ST specification exactly.